Carbon nanotubes double-walled

KEYWORDS carbon nanotubes doped nanotubes double-walled nanotubes Raman spectroscopy transmission electron microscopy... 

Abstract—The fundamental relations governing the geometry of carbon nanotubes are reviewed, and explicit examples are pre.sented. A framework is given for the symmetry properties of carbon nanotubes for both symmorphic and non-symmorphic tubules which have screw-axis symmetry. The implications of symmetry on the vibrational and electronic structure of ID carbon nanotube systems are considered. The corresponding properties of double-wall nanotubes and arrays of nanotubes are also discussed. 

P. Coquay, E. Flahaut, E. de Grave, A. Peigney, R.E. Vandenberghe, and C. Laurent, Fe/Co alloys for the catalytic chemical vapor deposition synthesis of single- and double-walled carbon nanotubes (CNTs). 2. The CNT-Fe/Co-MgAl204 system. J. Phys. Chem. B 109, 17825-17830 (2005). 

Finally, Eklund s group has described double-walled nanotubes (DWNT), with ca. 0.7 nm inner diameter and 1.4 nm outer diameter, that can form a three-layer cylindrical capacitor with a shell of bromine anions forming the outer electrode. Holes segregate on the outer nanotube, and saturation bromine doping creates 1 hole per 26 carbon atoms in the DWNT [135]. 

Chen G, Bandow S, Margine ER, Nisoli C, Kolmogorov AN, Crespi VH, Gupta R, Sumanasekera GU, Iijima S, Eklund PC (2003) Chemically doped double-walled carbon nanotubes cylindrical molecular capacitors. Phys Rev Lett 27 257403... 

Carbon nanotubes can have one, two, or many sidewalls and are referred to as single-, double-, or multi-walled nanotubes (SWNT, DWNT, or MWNT). Nanotubes can be metallic, or semi-conducting depending on the chirality of the tube. Single-walled nanotubes (SWNT) are about 1 nm in diameter, and hundreds of nanometers long, whereas multi-walled nanotubes (MWNT) are like nested... 

Fig. 4.2 Molecular models of (a) single-walled carbon nanotube, (b) double-walled carbon nanotube, and (c) multi-walled carbon nanotube.

C. Zhao, R. Kitaura, H. Hara, S. Irle, H. Shinohara, Growth of linear carbon chains inside thin double-wall carbon nanotubes, J. Phys. Chem. C, vol. 115, p. 13166-13170, 2011. 

V. Tishkova, P.-l. Raynal, P. Puech, A. Lonjon, M. Le Fournier, P. Demont, E. Flahaut, W. Bacsa, Electrical conductivity and Raman imaging of double wall carbon nanotubes in a polymer matrix, Compos. Sci. Technol., vol. 71, pp. 1326-1330, 2011. 

A single-walled carbon nanotube (S WNT) is a single graphene sheet rolled up in a seamless cylinder, whose diameter is of the order of few nanometers (Fig. 4.12). A double-walled carbon nanotube (DWNT) consists of rolled two graphene layers, and a multiwall carbon nanotube (MWNT) exhibits several co-axial rolls of graphene sheets, one sitting in each other and separated by about 0.35 nm. 

SWNTs single-walled nanotubes DWNTs double-waUed nanotubes MWNTs multi-walled nanotubes CNTs carbon nanotubes not purified... 

J. Miyamato, Y. Hattoii, D. Noguchi, H. Tanaka, T. Ohba, S. Utsumi, H. Kanoh, Y.A. Kim, H. Muramatsu, T. Hayashi, M. Endo, K. Kaneko, Efficient H adsorption by nanopores of high-puiity double-walled carbon nanotubes. J. Am. Chem. Soc., 128 (2006) 12636-12637. 

All potentials vs. screen-printed Ag/AgCl pseudo-reference, except values marked with asterisk ( ), which are vs. Ag/3M AgCl double-junction reference electrode, and values marked with dagger CfO, which are vs. saturated calomel. Abbreviations CoPC cobalt phthalocyanine, SPCE screen-printed carbon electrode, GOD glucose oxidase, MWCNT multi-walled carbon nanotubes, NAD nicotinamide adenine dinucleotide, PQQ pyrroloquinoline quinone, FIA flow injection analysis. 

P. M. F. J. Costa, S. Friedrichs, J. Sloan and M. L. H. Green, Imaging lattice defects and distortions in alkali-metal iodides encapsulated within double-walled carbon nanotubes. Chem. Mater. 17, 3122-9 (2005). 

Double-walled carbon nanotubes (DWCNTs) consist of two concentric graphene cylinders. DWCNTs, categorized different from both MWCNTs and SWCNTs, are expected to exhibit mechanical and electronic properties superior to SWCNTs. Endo et al. have suggested that... 

Muramatsu H, Hayashi T, Kim YA, Shimamoto D, Kim YJ, Tantrakarn K, Endo M, Terrenes M, Dresselhaus MS. Pore structure and oxidation stability of double-walled carbon nanotube-derived bucky paper. Chem Phys Lett 2005 414 444-448. 

Kim YA, Kojima M, Muramatsu H, Umemoto S, Watanabe T, Yoshida K, Sato K et al. In situ Raman study on single- and double-walled carbon nanotubes as a function of lithium insertion, Small 2006 2 667-676. 

Miyamoto J, Hattori Y, Noguchi D, Tanaka H, Ohba T, Utsumi S, Kanoh H et al. Efficient H2 adsorption by nanopores of high-purity double-walled carbon nanotubes, J Am Chem Soc 2006 128 12636-12637. 

The 0-d nanoparticles can be nano-metal oxides (such as silica,1 titania,2 alumina3), nano-metal carbide,4 and polyhedral oligomeric silsesquioxanes (POSS),5 to name just a few the 1-d nanofibers can be carbon nanofiber,6 and carbon nanotubes (CNT),7 which could be single-wall CNTs (SWCNT) or multiwall CNTs (MWCNT) etc. the 2-d nano-layers include, but are not limited to, layered silicates,8 layered double hydroxides (LDH),9 layered zirconium phosphate,10 and layered titanates,11 etc. 3-d nano-networks are rarely used and thus examples are not provided here. 

G. Chen, S. Bandow, E. R. Margine, C. Nisoli, A. N. Kolmogorov, V. H. Crespi, R. Gupta, G. U. Sumanasekera, S. Iijima, and P. C. Eklund, Chemically doped double-walled carbon nanotubes cylindrical molecular capacitors, Phys. Rev. Lett. 90(25), 257403-1-4 (2003). 

Nitrogen- and Boron-Doped Double-Walled Carbon Nanotubes... 

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